HPGL Export for Rhino is a HPGL plot file export plug-in for Rhino. This plug-in gives Rhino the ability to export geometric data from Rhino to HPGL Plot (PLT) files.HPGL Export for Rhino is very easy to use as it adds a new file type to the Rhino File Save As dialog box. To export a PLT file select Save As from the File menu. Select "HPGL Plot Files (*.plt)" from the "File of type" combo box and select a PLT file to export to.